Foods to Avoid With Type 2 Diabetes: Limit List and Swaps

01Basics

How food affects blood sugar in type 2 diabetes

Carbohydrates have the biggest effect on blood sugar, but the type, portion, what they are eaten with and individual response all matter. Fibre, protein and fat slow absorption, while refined carbohydrates and sugary drinks cause fast spikes. Long-term, weight, saturated fat and ultra-processed foods influence insulin resistance and heart risk. See diet for type 2 diabetes and dieta para diabetes tipo 2 (Spanish).

02Limit

Foods and drinks to limit

• Sugary drinks: soda, sweetened tea, energy drinks, fruit juice, smoothies with added sugar, sweet coffee drinks.
• Sweets and desserts: cakes, biscuits, ice cream, chocolate bars, sweet pastries.
• Refined grains: white bread, white rice, regular pasta in large portions, many cereals, crackers.
• Sugary breakfast cereals and flavoured instant oatmeal.
• Fried and fast foods: chips, fried chicken, burgers, pizza.
• Processed meats: bacon, sausage, hot dogs, deli meat (saturated fat, salt and preservatives).
• Trans fats and excess saturated fat: margarine, shortening, some baked goods, fatty cuts of meat, butter and full-fat dairy in large amounts.
• High-sodium foods: canned soups, ready meals, salty snacks. See low-sodium meals and snacks.
• Alcohol: limit and never drink on an empty stomach if you take insulin or sulfonylureas.
• Dried fruit and fruit juice in large amounts concentrate sugar.

03Swaps

Easy swaps

• Soda or juice → water, sparkling water, unsweetened tea or coffee.
• White bread → whole-grain or seeded bread, in measured portions.
• White rice → brown rice, quinoa, barley or cauliflower rice.
• Sugary cereal → plain oats with berries and nuts, or plain yoghurt with fruit.
• Chips → a handful of unsalted nuts, or air-popped popcorn.
• Processed meat → fresh chicken, fish, eggs or legumes.
• Dessert → fresh berries with Greek yoghurt, or a small portion of dark chocolate.
• Fried foods → baked, grilled or air-fried versions.

04Eat

What to build your plate around

• Non-starchy vegetables filling half the plate: leafy greens, broccoli, peppers, courgette.
• Lean protein in a quarter: fish, poultry, eggs, tofu, legumes.
• High-fibre carbohydrates in a quarter: whole grains, beans, lentils, sweet potato.
• Healthy fats: olive oil, nuts, seeds, avocado, oily fish.
• Fruit in portions of about one small piece or a cup of berries; whole fruit rather than juice.
• Unsweetened dairy or alternatives.
• See foods high in fibre.

05Label

Reading labels

• Check total carbohydrate per serving and the serving size.
• Look at “of which sugars” and added sugars in the ingredients (syrup, dextrose, maltose).
• Choose products with at least 3 g fibre per serving for breads and cereals.
• “Sugar-free” does not mean carbohydrate-free; check the label.
• Sugar alcohols can cause gas and diarrhoea.
• Check sodium and saturated fat.

06Habits

Eating habits that help

• Eat regular meals and avoid long gaps if you take blood-sugar-lowering medicines.
• Keep portions of starchy foods moderate; a plate or hand portion helps.
• Eat vegetables or protein first at meals, which can reduce post-meal rises.
• Walk for 10–15 minutes after meals.
• Keep to a healthy weight; even 5–10% weight loss improves blood sugar.
• Sleep well and manage stress.
• Check blood sugar patterns with your team.

08Cases

Three common situations

Someone who drinks two sodas a day: swap for water or sparkling water; this alone can lower blood sugar.

A person eating a large bowl of white rice at dinner: halve the portion, add vegetables and protein, and choose brown rice.

A person on insulin who skips meals: eat regularly to avoid hypoglycaemia and speak to the diabetes team.

09Day

A sample day of lower-spike eating

• Breakfast: scrambled eggs with spinach and whole-grain toast, or plain yoghurt with berries and nuts.
• Lunch: grilled chicken salad with chickpeas, olive oil and a small portion of quinoa.
• Snack: an apple with peanut butter, or carrot sticks and hummus.
• Dinner: baked fish, roasted vegetables and a small portion of brown rice or sweet potato.
• Drink water and unsweetened drinks; adjust portions and timing with your diabetes team, especially if you take insulin.

10Eating out

Eating out with diabetes

Plan ahead by checking menus, choose grilled or baked dishes, ask for vegetables or salad instead of chips, share desserts, watch portions of rice, pasta and bread, avoid sugary drinks and choose water or unsweetened options. If you take insulin or tablets that can cause low blood sugar, do not skip meals and carry fast-acting carbohydrate. Occasional treats are part of life; the overall pattern matters more than any single meal.

11Summary

Key points to remember

With type 2 diabetes, limit sugary drinks, refined carbohydrates, processed meat, fried foods and trans fats, and build meals on vegetables, protein, fibre and healthy fats. Portions, timing and individual response matter. Our nutrition team can create a plan with your diabetes team.

This guide is for general information and does not replace an assessment by your own doctor or dietitian.